Hi,
I just got wonderful news: Zenodot / Directmedia Publishing GmbH has announced an encyclopedia project. They are planning to take wikipedia (in a license compliant way..) content from the German language Wikipedia. The time schedule is for around 100 volumes until December 2010.
For those of you who speak German, you can read more about it at
www.wp10.de and de.wikipedia.org/wiki/Wikipedia:WP_1.0
Mathias